No, in 85+ when VW put in the brake fluid level switch they removed the
hydraulic sensing part of the circuit and used pressure switches with
fewer wires on the master cyl.

I think you have the operation of the fluid level switch backwards.
Jumpering the wires that go to the fluid switch forces a low fluid
condition reading. Unplugging the connector to the fluid cap should
force a good fluid level reading, with no jumper.

Mark

Ed wrote:

>I checked the switch at the handbrake. Disconnecting the ground does not make the light go out.
>
>I removed the connector from the level sensor on the top of the fluid reservoir and conencted a jumper wire to the two terminals on the wiring. The light is still on.
>
>So my guess is that it's something hydraulic.
>
>Ed
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>
>